\begin{table}[htbp!] \centering \begin{threeparttable} \caption{City features of completed vs. abandoned trials} \begin{tabular} {l c c c c} \toprule 
& Completed trials & Abandoned trials & Difference (SE) & Diff. $ p\text{-value}$ \\ \hline
Log(pop) & 13.00 & 12.79 & 0.22 (0.24) & 0.37 \\
Median age of residents & 36.08 & 33.72 & 2.36 (0.85) & 0.01 \\
Median household income & 63348.16 & 67981.22 & -4633.06 (6007.24) & 0.45 \\
Median property value & 329809.59 & 391200.00 & -61390.41 (84489.91) & 0.47 \\
Employed percent & 49.82 & 51.01 & -1.19 (1.33) & 0.38 \\
White percent & 48.43 & 50.23 & -1.80 (4.61) & 0.70 \\
Tax revenue per capita & 1562.32 & 2185.21 & -622.89 (449.16) & 0.17 \\
What Works Cities certification & 0.60 & 0.63 & -0.03 (0.13) & 0.83 \\
Trial pre-existed & 28.77 & 40.00 & -11.23 (15.92) & 0.49 \\ \hline
& 73 trials (30 cities) & 27 trials (19 cities) & & \\
\bottomrule \end{tabular} \label{tab:cityfeatures_balance} \begin{tablenotes} \footnotesize \item Standard errors are clustered by city. There are 7 cities in the Abandoned trials sample that are not in the Completed trials sample. The remaining cities in the Abandoned trials sample are also represented in the Completed trials sample. \end{tablenotes} \end{threeparttable} \end{table}
